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SHIJO.T.DANIEL
S5 MECHANICAL
ROLL NO : 859
REG NO : 11020125
OUTLINE
Introduction
History
Cruise control
Adaptive cruise control (ACC)
components of ACC
Working
Acceleration & ...
Features
Advantages
Limitations
Future aspects
ACC used vehicles
Conclusion
References
INTRODUCTION
Increased accident rate
Factors
Need o0f intelligent vehicles
Invention of Cruise control
HISTORY
1910 speed control with centrifugal governor
Modern cruise control - Ralph Teetor-1945
First car in 1958

Star...
CRUISE CONTROL
Cruise control - automatically controls the speed

of a motor vehicle.

 Also known as speed control or a...
ADAPTIVE CRUISE CONTROL
(ACC)
Advanced version
Keeps at steady speed
Using sensors for detection
Keeps safe distance
...
MAIN COMPONENTS ACC
Switches and pedals
Processor or mini

computer

Sensor
Electronic vacuum

actuator
WORKING OF ACC
Switch on ACC.
Set speed.
Sensors detects vehicle ahead.
Decelerate to ahead vehicle speed.
Keeps safe...
When the danger of a collision is

detected, it provides a red warning light
that flashes on the windshield.

The syste...
ACCELARATION & DECELARATION
ACC Accelerator
Actuator controls the throttle
CONTROL OF ACC
BRAIN: Mini computer.
Senses throttle position.
Senses accelerator position.
Adjust throttle
Senses ah...
LIDAR is Light Detection And Ranging.
 A laser diode was used to generate the light

signal.
RADAR is Radio Detection A...
CONTROLLER

Sensing and controlling
process
Car with fusion sensor
arrangement

Car with fusion sensor arrangement
ACC COMPONANTS IN A CAR
DEALING WITH SWITCHES
FEATURES
Maintains a safe, comfortable distance between

vehicles without driver interventions
Maintains a consistent pe...
ADVANTAGES
It’s very useful for long driving.
The driver is relieved from the task of careful

acceleration, deceleratio...
DISADVANTAGES
Cost
Not for heavy traffic
Dangerous in slippery roads
Encourages the driver to become careless.
The AC...
FUTURE ASPECTS
Co-Cooperative Adaptive cruise control or

CACC is already being tested in California .

ACC respond to t...
ACC EQUIPED VEHICLES
Ford fusion series
Jaguar
Mercedes Benz
Volkswagen
Audi
Chevrolet cruze (India)
CONCLUSION
Current system ranges 150 meters can stop and

slows if any obstruction
Fully autonomous car is probably not ...
REFFERENCE
1.

University of Michigan (July 12, 2004). U-M physicist:
Smart cruise control eliminates traffic jams. Press...
ANY QUERIES??
THANK YOU FOR LISTNING
Adaptive Cruise control
Adaptive Cruise control
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Adaptive Cruise control

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Adaptive Cruise control

  1. 1. SHIJO.T.DANIEL S5 MECHANICAL ROLL NO : 859 REG NO : 11020125
  2. 2. OUTLINE Introduction History Cruise control Adaptive cruise control (ACC) components of ACC Working Acceleration & Deceleration Controlling ACC Dealing with switches
  3. 3. Features Advantages Limitations Future aspects ACC used vehicles Conclusion References
  4. 4. INTRODUCTION Increased accident rate Factors Need o0f intelligent vehicles Invention of Cruise control
  5. 5. HISTORY 1910 speed control with centrifugal governor Modern cruise control - Ralph Teetor-1945 First car in 1958 Started in cars from 1974
  6. 6. CRUISE CONTROL Cruise control - automatically controls the speed of a motor vehicle.  Also known as speed control or auto cruise. Adjusting the throttle position to maintain a speed set by the driver
  7. 7. ADAPTIVE CRUISE CONTROL (ACC) Advanced version Keeps at steady speed Using sensors for detection Keeps safe distance Intelligent control Collision avoidance system
  8. 8. MAIN COMPONENTS ACC Switches and pedals Processor or mini computer Sensor Electronic vacuum actuator
  9. 9. WORKING OF ACC Switch on ACC. Set speed. Sensors detects vehicle ahead. Decelerate to ahead vehicle speed. Keeps safe distance Collision avoidance system
  10. 10. When the danger of a collision is detected, it provides a red warning light that flashes on the windshield.  The system provides an audible alert when it senses a reduction in traffic speed in vehicles ahead.
  11. 11. ACCELARATION & DECELARATION ACC Accelerator Actuator controls the throttle
  12. 12. CONTROL OF ACC BRAIN: Mini computer. Senses throttle position. Senses accelerator position. Adjust throttle Senses ahead vehicles
  13. 13. LIDAR is Light Detection And Ranging.  A laser diode was used to generate the light signal. RADAR is Radio Detection And Ranging  It is operated by radiating energy into space and detecting the echo signal reflected from target  While RADAR target is the car’s rear spoiler the stereo camera is constantly captures all objects in its field of view. It includes millimeter wave radar linked to a 640x480 pixel stereo camera
  14. 14. CONTROLLER Sensing and controlling process
  15. 15. Car with fusion sensor arrangement Car with fusion sensor arrangement
  16. 16. ACC COMPONANTS IN A CAR
  17. 17. DEALING WITH SWITCHES
  18. 18. FEATURES Maintains a safe, comfortable distance between vehicles without driver interventions Maintains a consistent performance in poor visibility conditions. Maintains a continuous performance during road turns and elevation changes Alerts drivers by way of automatic braking.
  19. 19. ADVANTAGES It’s very useful for long driving. The driver is relieved from the task of careful acceleration, deceleration and braking in congested traffics. Can avoid unconsciously violating speed limits. Reduction in accident rate. Reduction in driver fatigue. Increased fuel efficiency.
  20. 20. DISADVANTAGES Cost Not for heavy traffic Dangerous in slippery roads Encourages the driver to become careless. The ACC systems not respond directly to the traffic signals.
  21. 21. FUTURE ASPECTS Co-Cooperative Adaptive cruise control or CACC is already being tested in California . ACC respond to the distance and speed of the car ahead ,CACC communicate with two or more cars and work together to avoid collision.  Communication is quicker, reliable and responsive.
  22. 22. ACC EQUIPED VEHICLES Ford fusion series Jaguar Mercedes Benz Volkswagen Audi Chevrolet cruze (India)
  23. 23. CONCLUSION Current system ranges 150 meters can stop and slows if any obstruction Fully autonomous car is probably not viable in the foreseen future. Near by vehicles would be in constant communication with each other and act cooperatively. It will probably take decades, but car accidents may eventually become almost as rare as plane crashes are now.
  24. 24. REFFERENCE 1. University of Michigan (July 12, 2004). U-M physicist: Smart cruise control eliminates traffic jams. Press release. 2. L. C. Davis (2004). "Effect of adaptive cruise control systems on traffic flow". Physical Review Letters E 69 (6): 066110 (article ID; no page reference). 3. CY Liang, H Peng (1999). "Optimal Adaptive Cruise Control with Guaranteed String Stability". Vehicle System Dynamics 32 (4-5): 313-330. 4. P Venhovens, K Naab, B Adiprasito (2000). "Stop and Go Cruise Control". Proc. FISITA World Automotive Congress, Seoul, Korea. 5. L. C. Davis, “Effect of adaptive cruise control systems on traffic flow” Physics Department, University of Michigan, Ann Arbor, Michigan 48109, USA The American Physical Society (Received 27 October 2003; revised 22 January 2004; published 4 June 2004)
  25. 25. ANY QUERIES??
  26. 26. THANK YOU FOR LISTNING

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